74028643

View detailed technical data, stock status, and sourcing information for: 74028643
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Federal Supply Group

Engines, Turbines, and Components

Federal Supply Classification

2815 Diesel Engines and Components

National Stock Number

2815-00-432-1183

Item Name Code

15884

Assigment Date

09/14/1972 (53 years ago)

A metal ring designed to provide a seating surface for a valve, poppet, engine it is made of special high-grade alloy metal that can withstand high operating temperatures. For fluid valves, see seat, valve.

flat head style, 0.1875 inches nominal head height, 0.0156 inches nominal chamfer length, 30.0 chamfer angle in deg, 0.3320 inches nominal groove diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Head Style: flat
Head Height: 0.1875 inches nominal
Chamfer Angle In Deg: 30.0
Groove Diameter: 0.3320 inches nominal
Chamfer Length: 0.0156 inches nominal
Groove Width: 0.1000 inches nominal
Outside Diameter: 1.6510 inches nominal
Seat Angle In Deg: 45.0
Stem Style: grooved
Carbon Relief Groove: not included
Neck Radius: 0.3750 inches nominal
Stem Length: 5.8790 inches nominal
Stem Diameter: 0.3700 inches nominal
Distance From Groove To Stem End: 0.4010 inches nominal
Material And Location: unable to decode
Fsc Application Data: allis-chalmers scoop loader,model 645b

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
4820-01-215-2932	No Name Available	02/01/1988

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
211-2509	Engine Poppet Valve
4036609	Engine Poppet Valve
74028643	Engine Poppet Valve
74036609	Engine Poppet Valve
74036609V	Engine Poppet Valve
74036876	Engine Poppet Valve
AS-3095	Engine Poppet Valve
IPD-4028643	Engine Poppet Valve
IPD-74036609	Engine Poppet Valve

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 2815-00-432-1183?

The FSCG of the NSN 2815-00-432-1183 is 2815

Does the NSN 2815-00-432-1183 have a Schedule B code assigned?

Yes, the Schedule B code is 8409998000

Does NSN 2815-00-432-1183 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 2815-00-432-1183 contain precious materials?

Item does not contain precious metal.

Does NSN 2815-00-432-1183 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 2815-00-432-1183 was assigned to the Federal Catalog?

It was assigned 53 years ago, on Thu, Sep 14, 1972